Massive queue buildup

Brent Addis brent.addis at
Mon Nov 13 23:49:29 GMT 2006

greylisting is bad and I will never ever run it. I know of one case where greylisting has very nearly killed someone. They probably shouldn't have been using email to do what they were, but thats not the point.
greylisting adds an unnecessary delay to email, and can quite easilly be beaten if a spammer sets his mind to it.


From: mailscanner-bounces at on behalf of Damian Mendoza
Sent: Tue 11/14/2006 12:45 PM
To: MailScanner discussion
Subject: RE: Massive queue buildup

Run a DNS server locally, add more memory/CPU, use Greylisting, process mail using sender address verification before SA at the postfix or sendmail level and use RBLs at the postfix or sendmail level.


That should get your server load down to 2.0 or lower to keep up with your traffic.




Damian Mendoza

Mission Viejo, CA

949 586-2200




From: mailscanner-bounces at [mailto:mailscanner-bounces at] On Behalf Of Jay Chandler
Sent: Monday, November 13, 2006 2:32 PM
To: mailscanner at
Subject: Massive queue buildup


Built my first Mailscanner / Postfix box on Friday due to a Sendmail meltdown last week-- was forced to throw this box into production early.


It ran fine over the weekend, but today there's a massive queue buildup when I run an mqueue-- 10K so far and building.


Any idea where to look to sort out where it's coming from?


It's possible the box itself is overloaded, 2 2.4 ghz procs, with a load average of around 13.


Any guidance would be greatly appreciated.



Jay Chandler

Network Administrator, Chapman University

714-628-7249 / chandler at

"Bother," said Pooh as he struggled with /etc/, "it never does quite what I want.  I wish Christopher Robin was here." -- Peter Da Silva in a.s.r.


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